Stretch roll



Aug. 8, 1939.

Filed Feb. 21. 1939 3 Sheets-Sheet l P Q N b .w I a a v 3 w J H a mk QNR E g J (a N\ HI \N m\ \K w M kw A ttomeys eets-Sheet J. STEINER FiledFeb. 21, 1939 V//////////AW 7///// A Aug. 8, 1939.

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. W & a 9mm ,8 fi9% b ///////w////// fi M gm Patented Aug. 8, 1939UNITED STATES PATENT OFFICE 2 Claims.

This invention appertains to stretch rolls such as are used inconjunction with textile machinery. More particularly a stretch roll isused in conjunction with carding and shearing machines to preventwrinkles. Customarily the stretch roll is placed in advance of a rotarybrush or card roll to stretch the material so it will not be damaged bythe brush or card.

The principal object of the present invention is to provide the stretchroll which can be manufactured at a smaller diameter than the rolls nowgenerally in use, thus lessening the amount of friction of the roll withthe material.

Another important object of the invention is to provide a stretch rollconstructed in such a manner as to permit easy access to the workingparts thereof.

In the drawings:

Figure 1 represents a side elevational View of the roll.

Figure 2 is a fragmentary longitudinal sectional view through one end ofthe roll.

Figure 3 is a fragmentary detailed sectional view through one end of theroll showing the cylinder turned to a different position from that shownin Figure 2.

Figure 4 is an inside elevational view of one of the slats.

Figure 5 is a fragmentary longitudinal sectional view through theintermediate portion of the roll.

Figure 6 is a cross sectional view taken substantially on the line B-6of Figure 3.

Figure 7 is a section taken substantially on the line l! of Figure 3.

Figure 8 is an end elevational view of the roll.

Referring to the drawings wherein like numerals designate like parts, itcan be seen that the roll consists in construction of a pair of endmounts, each consisting of a base 5, an upright 6 and a tubular collar 1through which either the drive shaft 8 or the stub shaft 9 extends,depending upon which end of the roll is being considered.

The collar 1 is oversize and the drive shaft 8 does not engage the same.However, the aforementioned mounts each includes side walls It] and eachof the shafts 8 and 9 carries a collar l I at a point between the sidewalls In and these collars are recessed at diametrically opposite pointsto receive the tapered ends of the bearing screws l2 which are feedablydisposed through the said side walls Ill.

A cylindrical cam 13 split as at M is provided at each end of the roll,each of these cams being disposed in telescopic relation with thecorresponding collar 1 and having a bolt l5 disposed through its splitportion so that the cam can be tightened snugly in position on thecollar 1 to prevent self-adjustment and to maintain the cam 5 sodisposed that its high point l6 will always be below the shaft 8 or 9 tothe end that inward movements of the slats I! as they ride along thehigh points of the cam I 3 will act to move the other slats in anoutward direction, performing 10 the necessary stretching of thematerial passing over the roll.

The roll proper is made up of any desired number of slats ll, preferablyan even number as each slat has a diametrically opposed com- 15 panionslat which is operated by an interposed gear 3|.

As is clearly shown in Figure 5, the numeral l9 denotes the elongatedcylinder which slightly inwardly of its ends has the head portion 20 20shrunken on or otherwise secured to the ends of the shafts 8 and 9. Thusthe cylinder I 9 turns with the shaft 8.

At the intermediate portion of the cylinder I9 is the surrounding sleeve2| which is held in 25 spaced relation with respect to the cylinder l9by the spacer ring 22. As is clearly shown in Figure 5, the inner endsof the slats I l are reduced as at 23 and are slidably interposedbetween the end portions of the sleeve 2| and the cylinder I9, 30 thesereduced end portions 23 being provided with inwardly disposed pins 24threadedly disposed into the same and having smooth inner ends adaptedto ride in the slot 25 of the cylinder I9.

As shown in Figure 2, the outer ends of the slats ll have inwardlydisposed members 26 ridable in the slots 21 at the ends of the cylinderI9 and these members 26 are equipped with nuts 28. Thus the slats I! areslidably mounted on the cylinder l9 and as shown in Figures 6 and 7 theslats are constructed so as to slidably abut each other and form asubstantially cylindrical roll.

A rack 29 is inlaid in the inner face of each of the slats I! andsecured in place by screws 30. Companion slats I! have their racks 29meshing with a corresponding gear 31. Thus it can be seen that when oneslat I1 is being pushed inwardly as it rides on the high point of thecam 13, its rack is transmitting motion by way of its companion gear 3|to the diametrically opposed slats I1 and acting to move the upper slatin a direction toward one end of the roll. Thus with this action on bothend portions of the roll material passing over the roll will bestretched to the desired extent.

While the foregoing specification sets forth the invention in specificterms, it is to be understood that numerous changes in the shape, sizeand materials may be resorted to without departing from the spirit andscope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is:

1. In a stretcher roll, a plurality of pairs of opposed slats, cam meansfor moving the slats successively in a longitudinal direction as theslats move against the cam means, each of the said slats being providedwith a rack at its inner side and gears interposed between opposed slatsand meshing with the corresponding racks.

2. In a stretcher roll, a plurality of pairs of opposed slat-s, cammeans for moving the slats successively in a longitudinal direction asthe slats move against the cam means, each of the said slats beingprovided with a rack at its inner side and gears interposed betweenopposed slats and meshing with the corresponding racks, a cylinder onwhich the slats are movable longitudinally, pin and slot connectionsbetween the slats and the cylinder, said cylinder being formed withopenings through which the gears are operative in mesh with thecorresponding racks.

JOSEPH STEINER.

